General 318-340 questions
I can tell by the questions you’re asking you are inexperienced and that is perfectly fine. We all are/we’re at some point. My best advice to you is to find a machine shop locally and get to know them. Ask them to mentor you through your first build. You will learn a lifetime of information and hopefully retain it forever. If that’s not acceptable for you search Amazon for books, search “how to build high performance mopar small blocks” and you’ll get some good reading material.
Here is a start
Amazon product ASIN 1613250126